: You cannot convert an Evaluation version to a full version if the server is already promoted to a Domain Controller . You must demote it first. Key Mismatch : Ensure your key is specifically for "Windows Server 2012 Standard." Keys for the non-R2 version will not work. Server Fault official list of generic KMS keys to use as an intermediate step for the DISM conversion?
Activating is a straightforward process when you have a legitimate product key and follow the correct method—whether online, by telephone, or via KMS. The build 9600 designation confirms you are running the final, stable release of this operating system, and proper activation ensures full functionality, updates (until end of support), and compliance. : You cannot convert an Evaluation version to
Or via GUI: After entering key, click .
: If you cannot activate immediately, you can reset the evaluation timer (up to 3 times) by running slmgr /rearm in an elevated prompt. Server Fault official list of generic KMS keys